公开(公告)号：US20120093326A1

公开(公告)日：2012-04-19

申请号：US13270873

申请日：2011-10-11

Applicant: Manabu UCHINO ,  Shusuke TAKAHASHI ,  Akira INOUE

Inventor： Manabu UCHINO ,  Shusuke TAKAHASHI ,  Akira INOUE

IPC: H04R29/00

CPC classification number: G10L25/87 ,  G10H1/0008 ,  G10H2210/061 ,  G10H2240/151

Abstract: An audio processing apparatus includes an audio signal acquisition unit which acquires an audio signal of a musical piece, a feature value extraction unit which extracts a predetermined type of feature value from the audio signal acquired by the audio signal acquisition unit in time series, a change point detection unit which detects a change point in which the amount of change of the feature value extracted in time series by the feature value extraction unit is changed to be greater than a predetermined threshold value, a hook analysis unit which analyzes a hook place of the audio signal based on the feature value extracted by the feature value extraction unit in block units with the change point detected by the change point detection unit as a boundary, and a hook information output unit which outputs the hook place analyzed by the hook analysis unit as hook information.

Abstract translation: 音频处理装置包括获取乐曲的音频信号的音频信号获取单元，从音频信号获取单元获取的音频信号按时间序列提取预定类型的特征值的特征值提取单元， 点检测单元，其检测由特征值提取单元以时间序列提取的特征值的变化量变化为大于预定阈值的变化点;钩分析单元，其分析 基于由特征值提取单元提取的特征值的音频信号，以具有由变化点检测单元检测到的变化点为边界的块单位，以及挂钩信息输出单元，其将由分析单元分析的钩位置输出为 挂钩信息。

公开(公告)号：US20120024130A1

公开(公告)日：2012-02-02

申请号：US13190731

申请日：2011-07-26

Applicant: Shusuke TAKAHASHI ,  Akira Inoue

Inventor： Shusuke TAKAHASHI ,  Akira Inoue

IPC: G10H1/40

CPC classification number: G10H1/40 ,  G10H1/0008 ,  G10H2210/076 ,  G10H2220/086 ,  G10H2250/031 ,  G10H2250/235

Abstract: A tempo detection device includes: a basic feature amount extracting section which extracts a plurality of types of basic feature amounts from an input audio signal; a weighting and adding section which weights and adds the basic feature amounts of the plurality of types extracted in the basic feature amount extracting section to obtain an addition signal; and a tempo detecting section which detects BPM indicating the tempo on the basis of a periodic component included in the addition signal obtained in the weighting and adding section.

Abstract translation: 速度检测装置包括：基本特征量提取部，其从输入音频信号中提取多种类型的基本特征量; 加权和加法部分，其加权并添加在基本特征量提取部分中提取的多个类型的基本特征量，以获得加法信号; 以及速度检测部分，其基于在加权和加法部分中获得的加法信号中包括的周期分量来检测指示速度的BPM。

公开(公告)号：US20100058186A1

公开(公告)日：2010-03-04

申请号：US12502332

申请日：2009-07-14

Applicant: Motoyuki TAKAI ,  Shinya FUKUTA ,  Takashi KINOUCHI ,  Takeshi Ozawa ,  Akira INOUE ,  Shusuke TAKAHASHI ,  Manabu Uchino

Inventor： Motoyuki TAKAI ,  Shinya FUKUTA ,  Takashi KINOUCHI ,  Takeshi Ozawa ,  Akira INOUE ,  Shusuke TAKAHASHI ,  Manabu Uchino

IPC: G06F17/30 ,  G06F3/048 ,  G06N5/02

CPC classification number: G11B27/28 ,  G11B27/105

Abstract: A reproducing apparatus includes a storage section, a judgment section, an analysis section, a classification section, an input section, and a reproduction section. The storage section stores a plurality of pieces of audio data. The judgment section judges, based on a length of each piece of audio data stored in the storage section, an analysis time interval for each piece of audio data. The analysis section analyzes the audio data in the analysis time interval judged by the judgment section. The classification section classifies the respective pieces of audio data into a plurality of predetermined classification items based on results of the analysis. The input section causes a user to select the classification item of the audio data to be reproduced. The reproduction section reproduces the audio data belonging to the classification item selected by the input section from a reproduction start point within the analysis time interval.

Abstract translation: 再现装置包括存储部分，判断部分，分析部分，分类部分，输入部分和再现部分。 存储部分存储多条音频数据。 判断部分根据存储在存储部分中的每条音频数据的长度来判断每条音频数据的分析时间间隔。 分析部分在由判断部分判断的分析时间间隔中分析音频数据。 分类部分根据分析结果将各段音频数据分类为多个预定分类项目。 输入部分使用户选择要再现的音频数据的分类项目。 再现部分从分析时间间隔内的再现开始点再现属于由输入部分选择的分类项目的音频数据。